<template>
  <div class="login_content">
    <div class="login_box">
      <!-- logo -->
      <div class="avatar_box">
        <img src="@/assets/logo.png" alt="">
      </div>
      <!-- 表单区域 -->
      <el-form ref="loginFromRef" :model="loginForm" :rules="loginFromRules" label-width="0px" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-yonghuming" placeholder="admin"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-mima" placeholder="password" type="password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="submitLoginFrom('loginFromRef')">登录</el-button>
          <el-button type="info" @click="resetLoginFrom('loginFromRef')">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data(){
    return{
      loginForm: {
        // 这是登录表单的数据绑定对象
       username:'admin',
       password:'123456'
      },
      // 这是表单的验证规则对象
      loginFromRules:{
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
      }
    }
  },
  methods:{
    // 点击提交按钮，提交from表单
    submitLoginFrom(formName)
    {
      this.$refs[formName].validate(async valid =>
      {
        if(!valid)return;
        const {data:res} = await this.$http.post('login',this.loginForm);
        if(res.meta.status !==200)return this.$message.error('登录失败')
        this.$message.success('登录成功')
        window.sessionStorage.setItem('token',res.data.token)
        this.$router.push('/home')
      })
    },
    // 点击重置按钮，重置from表单
    resetLoginFrom(formName)
    {
      this.$refs[formName].resetFields()
    }
  }
}
</script>

<style lang="less" scoped>
  .login_content{
      background: #2b4b6b;
      height: 100%;
  }
  .login_box{
    width: 450px;
    height: 300px;
    background: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top:50%;
    transform: translate(-50%,-50%);

    .avatar_box{
      height: 130px;
      width: 130px;
      border:1px solid #eee;
      border-radius: 50%;
      padding:10px;
      box-shadow: 0 0 10px #ddd;
      margin:0 auto;
      margin-top:-65px;
      background: #fff;
      img{
        height: 100%;
        width: 100%;
        border-radius: 50%;
        background: #eee;
      }
    }
  }
  .login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding:0 20px;
    box-sizing: border-box;
    .btns{
      display: flex;
      justify-content:flex-end;
    }
  }

</style>